Gas-heater.



H. E. LOEBE.

GAS HEATER.

APPLICATION FILED 0CT.29. 1914.

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GAS-HEATER. v

Specification of Letters Patent. Pate t go, 1 5.

Application'filed October 29, 1914. Seria1 No.86 9,247.*

To all whom it may concern:

Be it known that I, HERMAN E; Loner, a

citizen of the United States, and a residentcially designed for. economically heating,

rooms with a minimum consumption of gas, and to allow of using the gas heater for heating water, or for cooking'purposes, or

for use in ranges, hot air furnaces and the like. 4 i 7 In order to accomplish the desiredresult,

use ismade of an outer mantle closed at the bottom and having a chamber in the form of a frustum of a cone, the chamber having outlet openings at the lower end, an inner mantle having its outer wall in the form of a frustum of a cone and its inner wall in the form of an inverted frustum of a cone, the said inner mantle being set in the lower portion of the said chamber and being spaced'fromthe outer mantle to form a passage between the mantles, the top of the inner mantle being a distance below the top of the said outer mantle, a burner at the lower end of the said inner mantle, and means for opening and closing the top of the outer mantle.

A practical embodiment of the invention is represented in the accompanying draw ings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a perspective view of the gas heater;'Fig. 2 is a sectional side elevation of the same; Fig. 3 is a plan view of the same; and Fig. at is a sectional plan view of the same on the line H of Fig. 2. l

The gas heater is mounted on a stand having a base A from which rises apipe B provided with an air inlet B and a gas inlet 13 connected by a flexible tube or other means with a gas supply"pipe"or' other source of gas supply. The upper end B of the pipe B forms a burner and from the said upperv end extend arms 13* in an up ward and outward dlrectlon for supporting a flanged ring B in which is set a base plate C, preferably of asbestos, havinga central opening C, and on this base plate C rests the lower end of an outer mantle D, preferably made of cast-iron. The outer mantle Dis held against lateral movement by the flange of the ring B and the inner wall of the said mantle is in the form of a frustum of a cone to form a correspondinglyshaped chamber within the mantle, and the upper end of the outer mantle D is 'provided with an apertured top plate E having an apertured regulating disk F. for opening and closing the openings in the top plate -E whenever it is desired to do so. The regulator Fis provided with a handle F for' conveniently turning itwith a view to move its apertures in or out of register with the apertures in the top plate E. The edge of, the regulator F is provided with a notchF into which projects a stop pin E held: on the top plate E- and serving to limit the turning motion of the'regulator' F. Within the lower portion of the outer mantle D is arranged an inner mantle G, preferably made of cast-iron, and resting on the base plate G. The. outer wall of this innermantle G is in the formof aifrustum of a cone while the ,innerwall of the said-mantle is in the formof an inverted frustum. of a cone, and the lower end'of the opening G of the said inner mantle G is in register with the central opening O .of the base plateO so that the flame emanating from the burner 13 can ,pass through the openings O, Gand intothe upper .portion of the chamber formed by the outer mantle D. By reference to Fig.2 itwillfbe noticed that the inner mantle G has its'top' a distance below the. top of the outer mantle D, and the outer wall ofthe said mantle G is spaced from the inner wall of the mantle D to form a passage between the said mantles to connect the upper portion of the interior" of the mantle D with the outlet openings. D arranged near thelower'end of the outer mantle D. By the arrangement described the flame" from theburner in passing through the inner malntleiGi heats the latter from theinsid'e,and the flame passing into the upper portion of the mantle D heats the latter likewise fromthe inside, and then the heat in' passing down through the passage between the mantles heats the outside of the 1 when this stage reached the, operator can 9 flame is sufiicient to keep the mantles in a 7 red hot condition. It is understood that the mantles are massive and hence when once heated to a red heat'remain in this state by the use of a very much reducedfiame. practice, about one-half hour is required to heat the mantles, 'say of an aggregate weight of seventeen pounds with a burner consuming gas worth about one cent an hour.

A large amount of air is drawn in with the flame through the opening Cand this air is highly heated by the flame and by coming in contact with the heated mantles G and D so that the air finally passes out through the openings D in a highly heated state. It will also be noticed that a large amount of heat is radiated from the outer mantle D to its surroundings, and the top plate E and its regulator F are heated by the flame and hot air, the heatof thesaid plate being radiated into its surroundings. When it is desired to allowfthe heated air to pass directly into the room, the regulator F is wholly or partly opened, thus diverting a large amount ofheatedair from the outlet openings D".

In practice, the mantles D andG become readily hot and consequently the air passing through the mantles and drawn in by the flame is quickly heated and a large amount of he at is radiated into the room.

When starting the heat, the regulator F is opened to allow quick heating of the mantles, and when this has been done the regulator F is closed to cause the heated air to travel down in the narrow passage to and out of the openings D.

It will be noticed that by constructing the mantle G with an opening in the form of an inverted frustum of a cone, the entering flame and air can readily spread during its upward passage through the mantle G and thus the heated air passes into the upper portion of the outer mantle D to be forced downward therein into the narrow passage between the mantles before finally reaching the outlet openingsD.

lhe heaterfis very simple and durable in construction, composed of comparatively few parts, and not liable to get out of order. Having thus described my invention, I

claim as new and desire to secure by Letters Patent:

1. A heater, comprising a burner, a base plate having acentral opening located above the said burner, an outside mantle held on the said base plate and provided at its lower portion with outlet openings, the said mantle having a chamber inthe form of a frustum of a cone, a top plate held on the top ofthe said outer mantle and provided with openings, a regulator mounted toturnon the said top plate and having openings adapted to register with the said top plate openings, and an interior conical mantle set on the said base plate within the said outer mantle and spaced a short distance from the outer mantle forming with the latter a narrow annular passage leading to the said outlet openings, the said inner mantle being of considerable less length than the outer mantle and having a central opening registering with the opening of the base plate.

2.- A heater, comprising a stand having a burner and a support above the said burner, a base plate resting on the said support and havinga central opening, an outer mantle held on the'said support and the said base plate, the outer mantle having a chamber in the form of a tiustum of a cone, the lower end of the outer mantle having outlet openings leading from the said chamber, and an inner mantle set on the said base plate and extending withinthe said outer mantle, the inner mantle being of conical shape and having an opening therethrough in the form of an inverted'frustum of a cone and in register with the base plate opening, the said inner mantle being of a slightly less diameter than the chamber of the outer mantle and forming therewith a narrow annular passage, the top of the inner mantle being a distance below the top of the said outer mantle.

3. A heater, comprising a tubular stand having at its lower end air and gas inlets and at its upper end a burner and upwardly and outwardly extending arms carrying a support above the said burner, a base plate resting on the said support and having a central opening, an outer mantle held on the said support and the said base plate, the outer mantle having a chamber in the form of a frustum of a cone, the lower end of the outer mantle having outlet openings leading from the said chamber, an inner mantle set on the said base plate and extending within the said outer mantle, the inner mantle being of conical shape and having an opening therethrough in the form of an inverted frustum' or a cone and in register with the base plate opening, the said inner mantle forming an annular passage with the said outer mantle and the top of the inner mantle being a distance below the top of the said outer mantle, an apertured top plate on the topof the said outer mantle, and a regulator mounted to turn on the said plate and having openings adapted to move into and out of register with the said top plate apertures on turning the said regulator.

4. A heater, comprising an outer mantle of thick material, closed at the bottom and having a chamber in the form of a frustum of a cone, the chamber having outlet openings at the lower end, an inner mantle having itsouter wall in the form of a frustum of a cone and its inner wall in the form of an inverted frustum of a cone, the said inner mantle being also of thick material and set in the lower portion of the said chamber and being spaced a short distance from the outer mantle to form a narrow passage between the mantles, the top of the inner mantle being a distance below the top of the said outer mantle, a burner at the lower end of the said inner mantle, and means for open- 1 ing and closing the top of the outer mantle; I In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

- HERMAN E. LOEBE. Witnesses:

Tnno. G. Hos'rnn, PHILIP D. RoLLnAUs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Batents,

Washington, D. 0. i 

